private void buttonEdit_Click(object sender, EventArgs e)
{
if (listViewSubject.SelectedItems.Count == 1)
{
SubjectSet subjectSet = listViewSubject.SelectedItems[0].Tag as SubjectSet;
subjectSet.NameSubject = textBoxName.Text;
subjectSet.Teacher = textBoxTeacher.Text;
subjectSet.Semester = Convert.ToInt32(textBoxSemester.Text);
subjectSet.Year = Convert.ToInt32(textBoxYear.Text);
Program.dean.SaveChanges();
ShowSubject();
}
}
private void listViewSubject_SelectedIndexChanged(object sender, EventArgs e)
{
if (listViewSubject.SelectedItems.Count == 1)
{
SubjectSet subjectSet = listViewSubject.SelectedItems[0].Tag as SubjectSet;
textBoxName.Text = subjectSet.NameSubject;
textBoxTeacher.Text = subjectSet.Teacher;
textBoxSemester.Text = subjectSet.Semester.ToString();
textBoxYear.Text = subjectSet.Year.ToString();
}
else
{
textBoxName.Text = "";
textBoxTeacher.Text = "";
textBoxSemester.Text = "";
textBoxYear.Text = "";
}
}
private void buttonAdd_Click(object sender, EventArgs e)
{
try
{
SubjectSet subjectSet = new SubjectSet();
subjectSet.NameSubject = textBoxName.Text;
subjectSet.Teacher = textBoxTeacher.Text;
subjectSet.Semester = Convert.ToInt32(textBoxSemester.Text);
subjectSet.Year = Convert.ToInt32(textBoxYear.Text);
Program.dean.SubjectSet.Add(subjectSet);
Program.dean.SaveChanges();
ShowSubject();
}
catch
{
MessageBox.Show("Невозможно добавить, введите другие значения.", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void buttonDel_Click(object sender, EventArgs e)
{
try
{
if (listViewSubject.SelectedItems.Count == 1)
{
SubjectSet subjectSet = listViewSubject.SelectedItems[0].Tag as SubjectSet;
Program.dean.SubjectSet.Remove(subjectSet);
Program.dean.SaveChanges();
ShowSubject();
}
textBoxName.Text = "";
textBoxTeacher.Text = "";
textBoxSemester.Text = "";
textBoxYear.Text = "";
}
//При ошибке
catch
{
MessageBox.Show("Невозможно удалить, эта запись используется!", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
